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Meeting Local & National Codes for Solar Installations: New Guide...

The popular and frequently referenced Model Inspection Checklist for Rooftop PV is now updated and expanded to include the latest national and international codes...

Overcurrent Protection and Disco Oddities

The two previous articles in this series covered how currents are developed and handled in PV systems and how the ampacity of conductors is...

Dealing with Currents in PV Systems — Just a little more...

In the previous article in this series, we saw how the voltages from PV modules are affected by the environment and how the National...

Solar Farms – School of Hard Knocks

If you have read my November/December 2016 article in IAEI Magazine regarding the hard lessons learned by some of the large solar contractors, you...

PV Modules Part 2. Calculations, This Won’t Hurt—Much

DC Modules Output varies.  As addressed in the previous article in this series, the direct current output of a dc PV module varies with the...

Alternating Current Disconnect Requirements for Photovoltaic Operation within California

With close to 500 authorities having jurisdiction (AHJs) in the state of California alone, it is often difficult to keep track of the preferential...

PV MODULES, Part 1 — What the AHJ Needs to Know,...

The Physics of the PV module. (Seasoned electrical authorities having jurisdiction (AHJs) may skip the section.) Photons (solar energy from sunlight) hit a PV module and...

Large-Scale PV Inspection Teams Planning for Success

Many years ago, I accepted a position working on a joint venture called KFM (Kiewit/FCI/Manson) to assist with the construction of a new bridge...

PV Power Plants

Large-scale PV plants have become commonplace in the desert southwest with plants routinely exceeding 100 MW in size. The largest plants in the U.S....

Ensuring the Safety of the Public: The Process of Inspecting PV...

The complexity of photovoltaic (PV) power systems dictates a careful and thorough inspection, starting with a detailed permit application and a plan review of...
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